package com.wj.wjpicturebackend.manager.upload;

import cn.hutool.core.io.FileUtil;
import com.wj.wjpicture.infrastructure.exception.ErrorCode;
import com.wj.wjpicture.infrastructure.exception.ThrowUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import java.io.File;
import java.util.Arrays;
import java.util.List;

@Service
@Slf4j
public class FilePictureUpload extends PictureUploadTemplate {
    @Override
    protected void validPicture(Object inputSource) {
        MultipartFile multipartFile  = (MultipartFile) inputSource;
        ThrowUtils.throwIf(multipartFile == null, ErrorCode.PARAMS_ERROR,"文件不能为空");
        // 1.校验文件大小
        long size = multipartFile.getSize();
        final long ONE_M = 1024 * 1024L;
        ThrowUtils.throwIf(size > 8 * ONE_M,ErrorCode.PARAMS_ERROR,"文件不能超过8M");
        // 2.校验文件后缀
        String fileSuffix = FileUtil.getSuffix(multipartFile.getOriginalFilename());
        // 允许上传的文件后缀
        final List<String> ALLOW_FORMAT_LIST = Arrays.asList("jpg","jpeg","png","webp");
        ThrowUtils.throwIf(!ALLOW_FORMAT_LIST.contains(fileSuffix),ErrorCode.PARAMS_ERROR,"文件类型错误");
    }

    @Override
    protected String getOriginFilename(Object inputSource) {
        MultipartFile multipartFile = (MultipartFile) inputSource;
        return multipartFile.getOriginalFilename();
    }

    @Override
    protected void processFile(Object inputSource, File file) throws Exception {
      MultipartFile multipartFile = (MultipartFile) inputSource;
      multipartFile.transferTo(file);
    }
}
